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Drum recorder

Part of David S. and Ruth L. Gottesman Hall of Planet Earth.

Drum Recorder AMNH/R.Mickens

Exhibition Text

This drum recorder was once part of a worldwide seismic network established in the early 1960’s to monitor underground nuclear weapons tests and earthquakes. Each drum records shaking of the ground- as it is happening- at one of the three locations indicated. The motions recorded on the drum are actual ground motions magnified several tens of thousands of